#main {
  padding-top: 75px;
  padding-bottom: 75px;
}
del {
  background-color: red;
}
ins {
  background-color: greenyellow;
}

pre {
  white-space: pre-wrap;       /* Since CSS 2.1 */
  word-wrap: break-word;       /* Internet Explorer 5.5+ */
}

 code {
  background-color: #eee;
  border: 1px solid #999;
  display: block;
  padding: 20px;
  word-break: break-all;
}
